Endometriosis, or Trying to Survive My Period

Ariel
I was diagnosed with endometriosis 15 years ago when I had surgery to remove ovarian cysts. I've been on countless birth controls and pain killers that have helped to varying degrees, but right now I'm not taking anything because I hadn't had my period for over a year so I wasn't experiencing symptoms, plus I recently got sober so narcotics are not an option.
My question to all you ladies out there with endometriosis, fibroids, cysts, or just really painful periods, is what types of natural remedies have you tried that have worked? Either throughout the month or during your period?
 I just got maybe my third period in the past year and the cramps and back pain are unbearable. I have to go to work and can't seem to manage to uncurl myself from the fetal position to get up and get dressed. Any help is greatly appreciated!